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GB/T 37427-2019

Chinese Standard: 'GB/T 37427-2019'
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GB/T 37427-2019
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 83.080.20
G 32
Plastics - Acrylonitrile-butadiene-styrene (ABS)
compound for automobile
塑料 汽车用丙烯腈-丁二烯-苯乙烯(ABS)专用料
ISSUED ON: MAY 10, 2019
IMPLEMENTED ON: APRIL 01, 2020
Issued by: State Administration for Market Regulation;
Standardization Administration of the People’s Republic of
China.
Table of Contents
Foreword ... 3 
1 Scope ... 4 
2 Normative references ... 4 
3 Classification and naming ... 5 
4 Technical Requirements ... 6 
5 Test methods ... 7 
6 Inspection rules ... 10 
7 Markings and accompanying documents ... 11 
8 Packaging, transportation and storage ... 11 
Plastics - Acrylonitrile-butadiene-styrene (ABS)
compound for automobile
1 Scope
This Standard specifies the classification and naming, technical requirements,
test methods, inspection rules, markings and accompanying documents,
packaging, transportation and storage of acrylonitrile-butadiene-styrene (ABS)
compound for automobile.
This Standard applies to melt-blending ABS compounds for automotive interior
parts, exterior parts and functional parts, of which, ABS is the base, heat-
resistant agent and/or other additives are added.
2 Normative references
The following documents are indispensable for the application of this document.
For dated references, only the dated version applies to this document. For
undated references, the latest edition (including all amendments) applies to this
document.
GB/T 250-2008, Textiles. Tests for colour fastness. Grey scale for assessing
change in colour
GB/T 1033.1-2008, Plastics. Methods for determining the density of non-
cellular plastics. Part 1: Immersion method, liquid pycnometer method and
titration method
GB/T 1040.2-2006, Plastic. Determination of tensile properties. Part 2: Test
conditions for moulding and extrusion plastic
GB/T 1633-2000, Plastics. Thermoplastic materials. Determination of Vicat
softening temperature (VST)
GB/T 1843-2008, Plastics. Determination of Izod impact strength
GB/T 2547-2008, Plastic resins. Sampling
GB/T 2918-2018, Plastics. Standard atmospheres for conditioning and
testing
GB/T 3682.1-2018, Plastics. Determination of the melt mass-flow rate (MFR)
and melt volume-flow rate (MVR) of thermoplastics. Part 1:Standard method
5.3 Particle appearance
Perform according to the provisions of SH/T 1541-2006.
5.4 Density
The sample is the middle portion of the type-1A injection molding sample that
is prepared in accordance with 5.1.
The conditioning of the sample is carried out in accordance with 5.2.
The test shall be carried out in accordance with the provisions of method A of
GB/T 1033.1-2008.
5.5 Melt mass flow rate
The test shall be carried out in accordance with the provisions of method A of
GB/T 3682.1-2018. The test condition is U (temperature: 220°C, load: 10 kg).
Before the test, the sample shall be dried at (80 ± 3)°C for 2 h.
5.6 Tensile yield stress
The sample is the type-1A sample that is prepared in accordance with 5.1.
The conditioning of the sample is carried out in accordance with 5.2.
The test is carried out according to GB/T 1040.2-2006; it uses type-1A sample;
the test speed is 50 mm/min.
5.7 Bending strength and flexural modulus
The sample is an 80 mm × 10 mm × 4 mm strip sample that is prepared in
accordance with 5.1.
The conditioning of the sample is carried out in accordance with 5.2.
The test is carried out according to the provisions of GB/T 9341-2008; the test
speed is 2 mm/min.
5.8 Izod notched impact strength
The sample is an 80 mm × 10 mm × 4 mm strip sample that is prepared in
accordance with the provisions of 5.1. The notch of the spline shall be
processed within 1h ~ 4h after injection molding; the notch type is type-A in
GB/T1 843-2008. The spline, of which the notch is processed, is the sample of
the Izod notched impact strength.
The conditioning of the sample is carried out in accordance with 5.2.
The sample is an injection molding sample, of which the diameter is (80 ± 2)
mm (the thickness does not exceed 10 mm), that is prepared in accordance
with 5.1.
The conditioning of the sample is carried out in accordance with 5.2.
The test is carried out in accordance with the provisions of ISO 6452:2007; it
uses a method of determining the condensed component mass. The test
temperature is (100 ± 0.5)°C; the heating time is (16 ± 0.1) h.
6 Inspection rules
Related standard:   GB/T 37881-2019  GB/T 37836-2019
   
 
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